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Finding the Fourth Proportional to 74,979.27, 112,468.95 and 19,575.27

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Solution

The fourth proportional to 74,979.27, 112,468.95 and 19,575.27 is: 29,362.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,979.27 : 112,468.95 = 19,575.27 : x
  2. Step 2: Convert to fraction form
    74,979.27/112,468.95 = 19,575.27/x
  3. Step 3: Cross multiply
    74,979.27x = 112,468.95 × 19,575.27
  4. Step 4: Simplify right side
    74,979.27x = 2,201,610,062.87
  5. Step 5: Solve for x
    x = 2,201,610,062.87/74,979.27
  6. Step 6: Final answer
    x = 29,362.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.